ASTROSAT CZTI

Data Quality Report

Orbit 40707

Creation date: 2024-06-27T22:19:25.075508
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_029T02_9000005558_40707cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40707cztM0_level2_quad_clean.evt
Size (bytes)342,671,04085,913,280
Size326.8 MB 81.9 MB
Events in quadrant A2,858,009590,186
Events in quadrant B2,692,825613,375
Events in quadrant C4,128,164555,239
Events in quadrant D2,622,283497,202

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114673
B0112392
C0154762
D0112572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4918250.508337%
B4918490.996340%
C49183286.669378%
D49183386.872712%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7040 4919 21 21 0.30% 0.43%
B 7040 4919 32 32 0.45% 0.65%
C 7040 4919 291 291 4.13% 5.92%
D 7040 4919 29 29 0.41% 0.59%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 464708 4049.67 559 549 114.6
A 2 79 166920 1451.54 559 549 114.6
A 12 189 47884 412.99 559 549 114.6
B 0 229 218516 2006.19 562 547 108.6
B 0 190 115613 1059.07 562 547 108.6
B 5 255 69253 632.37 562 547 108.6
C 9 187 1790038 14402.98 533 535 124.2
C 15 214 210372 1688.89 533 535 124.2
C 12 249 29674 234.53 533 535 124.2
D 2 250 157678 1218.22 517 501 129.0
D 12 191 129088 996.63 517 501 129.0
D 2 249 127031 980.68 517 501 129.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter